Cao was also ordered to pay costs of £500, and a victim surcharge of £20.

The pipe's at Dragon City were coated in a thick layer of grime

A council spokesman said: "The safety of food and standards of hygiene in our food businesses is of the utmost priority to us. The owner in this case failed to deal with the issues raised by officers and has been prosecuted as a result.

"Cases like this are extremely rare but officers will take tough action against any business found to be in breach of food hygiene laws. Residents can be reassured that the majority of food outlets in the borough are operated at a very high standard."